Can you hack WPA2

WiFi hacking: step by step

There is no set process or procedure for hacking and pentesting WiFi. It always depends on the ambient conditions and what information you received in advance. In other words, you may know that a vulnerability may exist. However, it can also be the case that the weak point has yet to be determined.

The following description is a system of how one can tap into WLAN hacking as a beginner. The aim is to find out the as yet unknown WiFi password for a particular WiFi network. Of course, this assumes that you have a WLAN access point that has weak points or a faulty configuration. It is recommended to try this out on your own devices.

Information Gathering: Determining the authentication and encryption

At the very beginning there is information gathering. Regardless of whether you already know whether you want to hack or pentest a certain WLAN or first want to find out about possible targets of attack.

Questions about choosing the right attack method

After the information gathering, we decide which attack methods we can use to achieve the goal. The starting point is often to crack a WLAN password using brute force, the most cumbersome of all ways. Most useful attack methods are based on errors in the implementation of the authentication or in the configuration of the access point.

Implementations: It can be worthwhile during information gathering to try to determine the exact manufacturer and model type of the access point. Occasionally, these devices have individual implementation errors that turn out to be weak points in WLAN security and can be exploited for an attack.

Configurations: Another starting point are incorrect user configurations or standard settings that the user did not change during commissioning. It happens that preset passwords can be derived from the publicly visible WLAN name (SSID) or the MAC address of the WLAN interface. In particular, very cheap devices from mass production, which some network operators also use and lend or sell to their customers, are affected.

Authentication: The type of authentication and encryption are the greatest weaknesses. If it is WPA / WPA2 Enterprise Mode, the WLAN users are authenticated centrally using individual user names and passwords. The usual WiFi hacking methods and tools will get you nowhere.
One will have to deal with methods here to find out the password for a particular username. Usernames usually have a structure that can be determined. For example, using social engineering. You may be able to determine the relevant password in the same way. In other words, by getting the person concerned to simply reveal this information (phishing, social engineering, ...).

Is it a WLAN with WPA / WPA2 Personal Mode, then the WLAN is only secured with a password. In this case you should check whether the access point supports authentication via WPS and whether it is switched on.
Around two thirds of all WLAN access points support WPS. For most of them, it should even be switched on automatically. If so, then the matter is quite simple. Brute force on the WPS pin is a common and promising attack method. In about 3 to 10 hours you can find out the WiFi password in this way. If the access point has known implementation errors, it is even faster.

If WPS is not switched on or the WLAN access point does not master the process, things get a little more complicated. Then you have to hope that the WLAN password is only minimally complex and is perhaps in a password database that can be obtained as a text file from the Internet. Alternatively, you can also create your own password database.
The usual way to get the WLAN password with WPA and WPA2 is a dictionary attack (WPA-PSK Dictionary Attack).

It rarely happens, but older WiFi access points are still set to WEP. This authentication and encryption method is out of date and extremely insecure. It is very easy to crack if there is enough data traffic in the WLAN.

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